Animal Proteins in feedingstuffs

Disease transmission

Fragments of animal origin in animal feed pose a significant risk for transmitting existing diseases like Bovine Spongiform Encephalopathy (BSE or mad cow disease) and the development of new diseases. Preventing the development of new diseases resulting from animals' repeated exposure to animal proteins is an important NRL task.

BSE spreads mainly through recycling animal remains into animal feed ingredients, especially feed for ruminants. Prions responsible for causing BSE can be present in various animal products. Hence, it is crucial to detect any animal fragments in animal feed to prevent the spread of the disease. Additionally, various feed bans have been implemented to reduce the risk of contamination, and monitoring programs have been established to enforce the ban.

Animal proteins

In addition to its NRL responsibilities, WFSR serves as the designated control laboratory for animal proteins in the Netherlands. We conduct thorough examinations of animal feed to detect any traces of animal-derived fragments, including bone, muscle, hair, feathers and more. Our findings are reported to the competent authority, the NVWA (Dutch Food and Consumer Product Safety Authority).

Official methods

Several official methods that support each other have been established to check for animal proteins. Visual techniques, mainly microscopic examination, are the primary methods for detecting the presence of bone fragments, as well as muscle fibres, hair, filaments of feathers and fish bones. This method is supported by DNA detection and identification (PCR) and protein detection (immuno-assays).

Member of the scientific advisory board

WFSR is a member of the Scientific Advisory Board of the EURL (European Union Reference Laboratories). The performance of all tasks is part of the additional requirements set out in Regulation (EU) 2016/1238 (description of technical method) and in Regulation (EC) Nr. 999/2001 (prohibition).